Need help finding injectors

[Striker2237]

Hello, I am currently building a EFI 408 stoker but am having problems finding large enough injectors that have a spray pattern that will work with a single vavle engine. Engine is based off a 360 magnum engine.

Thanks guys!

[JustJohn]

How much flow do you need and what spray pattern? A single valve intake is fairly tolerant for spray as long as you aren't washing the intake walls with gas.

[Ghiaguy]

Injector Dynamics

http://injectordynamics.com/

They have http://injectordynamics.com/injectors/id2000/ which will flow up to 3700cc/minute -- you'll probably be needing some that are a lot smaller -- My buddy is making 1000 HP out of a 150 ci engine and hasn't needed to step up to these yet -- I'm running their 725cc injectors on my 400HP ACVW 4 cylinder on E85 and nothing says single valve like a Bug head LOL

Call them up, they have always been very helpful to me and will get you into the correct sized injector

[parsonsj]

x2 on ID. They are the best, and provide exact data for your tuner to get you set up and running great.

[Striker2237]

I only require about 42lb/hour at this stage in my project, have to be high impedance as I am using a standard ECU to control the system. As far as spray pattern I just need something that won't coat the runner leading to the valve with fuel vapor, my intake is a heavily ported Mopar M1 EFI 2BBL feeding into R/T heads.

I really like the look of the injector dynamics parts but the smallest one they offer is 70lb/hour!?! That seems much too large for what I intend to do plus I'm not sure if that is the right choice as this is just going to be a weekend race vehicle and not a full on competition rig.

[JustJohn]

I didn't check with the suppliers to see if these are still available but here are some options that we manufacture:
RC Engineering - 42 lb/hr, SL9-440, tri-cone spray (narrow pattern ~ 8 deg)
Summit/Trick Flow - 44 lb/hr, TFS 89048, tri-cone spray
Prestolite/Accel - 44 lb/hr, 44 lb/hr, tri-cone spray
Holley - 42 lb/hr, 250R150A, tri-cone spray
Holley - 44 lb/hr, 250R158A, tri-cone spray

Another option is just go to the auto parts store and ask for an injector 99 - 03 Ford F150. We just released a 44 lb/hr injector with an 11 degree cone spray.

[parsonsj]

A shame on the minimum flow of the ID parts. If it were me, I'd call them anyway. See if they have any non-advertised setups, or even to get some tech support on what 42 lb. injectors they'd recommend.

[Striker2237]

I didn't check with the suppliers to see if these are still available but here are some options that we manufacture:
RC Engineering - 42 lb/hr, SL9-440, tri-cone spray (narrow pattern ~ 8 deg)
Summit/Trick Flow - 44 lb/hr, TFS 89048, tri-cone spray
Prestolite/Accel - 44 lb/hr, 44 lb/hr, tri-cone spray
Holley - 42 lb/hr, 250R150A, tri-cone spray
Holley - 44 lb/hr, 250R158A, tri-cone spray

Another option is just go to the auto parts store and ask for an injector 99 - 03 Ford F150. We just released a 44 lb/hr injector with an 11 degree cone spray.

Can you please give me a link to your storefront so I can see if those would be compatible? At a quick glance I think that the RC Engineering ones fit what I need quite well. Thanks!

[Ghiaguy]

RC Eng -- Good Old Russ Collins -- First dude to do 200mph on a Bike in the quarter, and Vance and Hines were the little worker bees on his TF Bike too -- Russ isn't involved with the day2day anymore, but I've used their injector cleaning service several times and they do a great job... I heard OK things about their injectors too



You said you needed big injectors LOL,,, BUT the ID injectors will flow nicely at quick pulses AND you can drop the fuel pressure down to 30 psi to help out your low speed requirement --

How does it feel that a little VW bug motor needs bigger injectors than your V8 -- --

Just stirring the pot -- Peace and Love -- Peace and Love

[dirty rick]

I would argue that smaller injectors at higher pressure will be more efficient, providing better atomization that a large Injector at 30 psi slobbering at idle pulsewidths.

[Striker2237]

RC Eng -- Good Old Russ Collins -- First dude to do 200mph on a Bike in the quarter, and Vance and Hines were the little worker bees on his TF Bike too -- Russ isn't involved with the day2day anymore, but I've used their injector cleaning service several times and they do a great job... I heard OK things about their injectors too

You said you needed big injectors LOL,,, BUT the ID injectors will flow nicely at quick pulses AND you can drop the fuel pressure down to 30 psi to help out your low speed requirement --

How does it feel that a little VW bug motor needs bigger injectors than your V8 -- --

Just stirring the pot -- Peace and Love -- Peace and Love

Big yes, for a V8. I'm not looking nor do I want MASSIVE injectors as I want the optimal size so I can run them in their "comfort" zones. I am fully aware that 4 cylinder (anything with less than 8) engines need much bigger injectors and that what I am looking for is considered average for those engines, however for a V8 70lb/hour injectors are HUGE lol!

[JustJohn]

I work for Standard Motor Products. We don't retail the injectors, just mfr and sell to all the aftermarket guys. What I'm doing is going through my database of flow rates to see what matches and pulling the customer part numbers for you.

Can you please give me a link to your storefront so I can see if those would be compatible? At a quick glance I think that the RC Engineering ones fit what I need quite well. Thanks!

[JustJohn]

I would argue that smaller injectors at higher pressure will be more efficient, providing better atomization that a large Injector at 30 psi slobbering at idle pulsewidths.

If the injector is running at it's minimum operating pressure (usually 3 bar), there is no atomization benefit to raising the fuel pressure. Over-sizing the injector ends up costing you metering resolution at low idle, which basically means the injector just flows too much gas.

[MonzaRacer]

I would argue that smaller injectors at higher pressure will be more efficient, providing better atomization that a large Injector at 30 psi slobbering at idle pulsewidths.

Actually that's incorrect, and there are guys running ID2000 injectors on turbo 4 cyl, and can get injector to ing down to less than 2 ms and idle clean.